.w {
    width: 1200px;
    margin: 0 auto;
}


.fr {
    float: right;
}

.style_blue {
    color: skyblue;
}

/* 快捷导航 */
.shortcut {
    height: 31px;

    background-color: #f1f1f1;
}

.shortcut ul li {
    float: left;
}

.header {
    position: relative;
    width: 100%;
    height: 105px;
    background-color: #f6f6ea;
}





.logo {
    position: absolute;
    top: 25px;
    width: 171px;
    height: 61px;
    background-color: skyblue;
}

.logo a {
    display: block;
    width: 171px;
    height: 61px;
    background: url(图片/logotiaozheng.png) no-repeat;
    font-size: 0;
}

.search {
    position: absolute;
    left: 310px;
    top: 25px;
    width: 900px;
    height: 50px;
    border: 2px solid #1988b1;
    background-color: black;
}

.search input {
    width: 800px;
    height: 50px;
    padding-left: 10px;
}

.search button {
    float: right;
    width: 100px;
    height: 50px;
    background-color: skyblue;
    font-size: 16px;
    color: #fff;
}

.shopcar {
    position: absolute;
    right: 100px;
    top: 25px;
    width: 260px;
    height: 50px;
    line-height: 50px;
    text-align: center;
    border: 1px solid #dfdfdf;
    background-color: #f7f7f7;
    font-size: 20px;
    color: skyblue;
}

.nav {
    height: 47px;
    width: 100%;
    border-bottom: 2px solid black;
    background-color: gray;
}


.nav .dropdown {
    float: left;
    width: 17%;
    height: 47px;
    background-color: gray;
}

.navitems .dt a:hover {
    background-color: orangered;
}

.navitems .dt a {
    color: aqua;
    height: 100%;
    width: 100%;
    display: block;
}

.nav .navitems {
    float: left;
    height: 47px;
    width: 83%;
}

.nav .dropdown .dt {
    width: 100%;
    height: 100%;
    color: #dfdfdf;
    text-align: center;
    line-height: 47px;
    font-size: 20px;

}

.navitems div {
    float: left;
    width: 20%;
    height: 100%;
}

.navitems .dt {
    display: block;
    width: 20%;
    height: 100%;
    color: #dfdfdf;
    text-align: center;
    line-height: 47px;
    font-size: 20px;
    float: left;
    background-color: gray;
}


.footer {
    height: 40px;
    background-color: skyblue;
    padding-top: 30px;
}

.mod_service {
    /* height: 88px; */
    position: relative;
    border-bottom: 1px solid #ccc;
}

.mod_service .service_txt {
    float: left;
    width: 20%;
    background-color: skyblue;
    /* line-height: 20%; */
}

.service_txt div {
    float: left;
    width: 100%;
}

.service_txt h4 {
    text-align: center;
    width: 100%;
    font-size: 14px;
}

.service_txt p {
    text-align: center;
    width: 100%;
    font-size: 12px;
}

.dibu {
    width: 100%;
    height: 20px;
    background-color: skyblue;
}

/* .service_txt {
    width: 25%;
    height: 26px;
} */

/* .main {
    height: 415px;
    background-color: black;

} */